Title:
Tunable Piezoelectric Mems Resonators Suitable For Real-time Clock Applications
Tunable Piezoelectric Mems Resonators Suitable For Real-time Clock Applications
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Abstract
A microelectromechanical resonator can include a suspended frame-shaped beam anchored at four corners thereof to a surrounding substrate along with a suspended resonator plate tethered on four sides thereof to corresponding sides of the frame-shaped beam. A pair of drive electrodes are provided on first and third diametrically opposite corners of the frame-shaped beam and a pair of sense electrodes are provided on second and fourth diametrically opposite corners of the frame-shaped beam. The resonator may also include a ground electrode on the frame-shaped beam and a piezoelectric layer sandwiched between each of the drive and sense electrodes and the ground electrode.
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5/28/2013
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Patent